Bearing extractor



Aug 14, 1923. 11,464,693

' E. P. CAMPBELL BEARING EXTRACTOR Filed Sept. 12. 1921 .211 n nu um INVENTOR.

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I o y 4 a 6 BY ATTORNEY Patented Aug. 14, 1923 1 erases Parana :ennnsrr. chairman/or srecxrci CALIFORNIA.

BEARING Application filed September clear, and exact, description offthe same, I

reference being. had to the accompanying drawings, and to the characters of reference "marked thereon, which form apart of this application.

Thisinvention relates to improvements in tools for extracting entire bearlngs, whether of the ball or solid type, the principal object being toprovide a device of this character particularly adapted tobe used for the "extractingthe bearings from the casings or Ford cars. 3 V

Another object is to so design the device :that it will positively extract the bearing,

i and without straining or tending to warp or squeeze the same during the pulling operation. I have'also designed an extractor with theleast possible number of parts, and without sacrificing anything of. efliciencyin so doing. .7

A further object of the invention. is to produce a simple and inexpensive device and yet one which will be exceedingly effective for the purposes for which it is designed.

of of of These objects I accomplish by. means such structure and relative arrangement parts as will fully appear by a perusal the following specification and claims.

In the drawings similar characters reference indicate corresponding parts the several views.

Fig. 1 is an exterior elevation of my extractor, showing the same operating on'a bearing of the type-above described.

Fig. 2 is a sectional elevation of the: extractor. V V

Fig. 3' is a fragmentary section at the jaw end of the extractor, showing the jaws contracted or normal.

Referring now more particularly to the characters of reference on the drawings, the I numeral 1 denotes'a hollow shank, knurled on its outer surface as at2 to enable it to be gripped by hand, and provided with a plurality of integrally formed spring jaws 3 at one end, the jaws together forming a hollow cylinder. The jaws, at their outer ends, have outwardly projecting shoulders of the generators or starters of nx'rnscron'.

,12,1921. serial in); 499,971.

of which at the outer and small end is less than that of the shoulders 5.

Threaded into the" opposite end of the shank is a screw 8 having a handle member 9 on its outerend, this screw being adapted to bear against the inner end of the pin.

ofsuch-a diameter as to permit them, when in their normal or closed position, to pass neatly through the bore of a bearing 10 which is seated in a cup in a housing 11 a suflicient distance from the end wall 12 there of to permit the width of the shoulders 4.

resting therebetween.

' In'order to extract the bearing, are inserted through the bearing and the screw 8 then turned. the pin 6 to be moved outwardly, the taper headthereof pressing against the shoulders 5 and forcing the jaws outwardlyuntil the said shoulders rest on the pin, when the limit of expansion of the jaws has been reached. The collars 4 then project beyond the bore of the bearing, and when the screw is turned further, the pin will bear against thewall 12 and not being able to move away further, will remain stationary while the shank and jaws move in the opposite direction drawing the bearing therewith without any binding or gripping the jaws as stated,

.The jaws and outer shoulders thereon are.

This causes the main portion of action, but with an even and steady pressure.

From the foregoing description it will be readily seen that I have produced such a de vice as substantially fulfills the objects of the invention as set forth herein. i"

While this specification sets; forth in detail the present and preferred construction of the device, still in practice such deviations from such detail maybe resorted to as do not form .a departure from the spirit of the invention, as defined by the appended claims.

Having thus described my invention, what claim as new and useful and desire to secure by Letters Patent, is i- 1. A hearing extractor comprising a hollow shank having a plurality of jaws at one end, said jaws being normallyadapted to pass through the bore of a bearing and enclosing a hollow area, inwardly projecting shoulders on the jaws, and a cylindrical pin having- :a shonb taiper on its onten end fitted in theimllow area, said pin being of langel diameter thansaid shoulders and adapted tobe moved outwardly, of the jaws such movement being able to be continued after the taper portion of the pin has passed on} wardly of the shoulders.

A bearing extractorsconxpr ising a hol- 10w shank havlng a plurallty of aws at one end, S8161 jawsheihgnommally :ataptecl tent. V I V J ,In testimony whefeof I afiix signature,

5 latter-hove been expanded t oltheir full e2} 5 ERNEST PIQAM B ELL. 

